The update is never going to come, is it? The creator is probably trying to squeeze extra money out of people by making them subscribe to the Patreon as well.
No, she doesn't. It is exactly opposite. AFAIK she is trying to figure out how to update the files without making people who already bought the game here to pay again for them.
A month later and she still hasn't figured it out. Yeah, this is definitely not because she is totally uninterested in ever bringing the update to Itch, it must still be because of """"technical issues"""".